Find the volume and surface area

Twenty five is the quotient of a number y and 3.5

Vilka [71]

Y/3.5= 25

(Hoped this help^)

8 0

3 years ago

Confusing subject, can anybody help me??

Alisiya [41]

Answer:

ya how can I help you submit your question please

6 0

3 years ago

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Shannon’s rectangular countertop is 3 feet wide. It is 3 times as long as it is wide. Find the length and area of Shannon’s coun

kompoz [17]

Answer:

9 feet long

Step-by-step explanation:

6 0

3 years ago

ASAP Write the equation of a line that is perpendicular to the given line and that passes through the given point.

motikmotik

Answer:

y = - 3/2x - 4

Step-by-step explanation:

m = - 3/2 ( use the opposite reciprocal of the slope given) Perpendicula lines have opposite reciprocal slope

2. Find b by plugging in the m and one of the points given into y = mx + b

5= - 3/2 ( - 6 ) + b

5 = 9 + b

- 4= b

3. Write the equation using the m and the b you just found

y = - 3/2x - 4

7 0

3 years ago

For which value(s) of the constant k is the circle x² + (y − k)² = 16 tangent to the line y = 3?

STALIN [3.7K]

Answer:

Step-by-step explanation:Let us find points of intersection of line

3

x

+

4

y

−

k

=

0

and circle

x

2

+

y

2

=

16

. We can do this by putting value of

y

from first equation i.e.

y

=

k

−

3

x

4

and we get

x

2

+

(

k

−

3

x

)

2

16

=

16

or

16

x

2

+

k

2

+

9

x

2

−

6

k

x

=

256

i.e.

25

x

2

−

6

k

x

+

k

2

−

256

=

0

This would give two values of

x

and corresponding two values of

y

i.e. two points. But tangent cuts the circle in only at one point. This will be so when discriminant is zero i.e.

(

−

6

k

)

2

−

4

⋅

25

⋅

(

k

2

−

256

)

=

0

or

−

64

k

2

+

25600

=

0

or

k

=

±

20

graph{(x^2+y^2-16)(3x+4y-20)(3x+4y+20)=0 [-10, 10, -5, 5]}

5 0

4 years ago

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